Tightening auxiliary device for strapping belt

ABSTRACT

A tightening auxiliary device for a strapping belt includes a main body which is mounted to a strapping machine. One end of the main body is a stop portion provided with a strapping buckle. When the strapping machine is used to strap a box, the strapping belt is wound around the box, and a first end of the strapping belt is fixed to a first side of the strapping buckle, and a second end of the strapping belt is wound around a second side of the strapping buckle and fitted on a rotary shaft of the strapping machine. During the tightening operation, the stop portion holds against the strapping belt and the first side of the strapping buckle, so that the strapping machine can pull the second end of the strapping belt effectively for tightening the strapping belt to be closely attached to the box, enhancing the strapping effect.

FIELD OF THE INVENTION

The present invention relates to a tightening auxiliary device for a strapping belt, and more particularly to a tightening auxiliary device for a strapping belt.

BACKGROUND OF THE INVENTION

As shown in FIG. 1, a conventional strapping machine 1 is used to strap a box 4 with a strapping belt 2 and a strapping buckle 3. The strapping machine 1 comprises a retaining member 5 and a rotary shaft 6. A free end of the retaining member 5 is formed with a retaining recess 7 and a through hole 8 close to the retaining recess 7. The rotary shaft 6 is used to tighten the strapping belt 2. The strapping buckle 3 has a first side 3A and a second side 3B. When in use, the strapping belt 2 is first wound around the box 4, and a first end of the strapping belt 2 is wound around the first side 3A of the strapping buckle 3, and then a second end of the strapping belt 2 is wound around the second side 3B of the strapping buckle 3 and inserted through the through hole 8 to be fitted on the rotary shaft 6. When the strapping machine 1 is actuated, the rotary shaft 6 is rotated to bring and tighten the strapping belt 2 to complete the strapping operation. However, when the strapping belt 2 is tightened, the retaining recess 7 of the retaining member 5 holds against the second side 3B of the strapping buckle 3. When the strapping operation is completed, the strapping belt 2 at the second side 3B of the strapping buckle 3 is subjected to the acting force applied to tighten strapping belt 2 and the acting force applied to hold against the strapping buckle 3, so the strapping belt 2 won't be pulled further. As a result, there is a gap between the strapping belt 2 and the box 4. The strapping belt 2 cannot be tightened. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve this problem.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide an auxiliary device for tightening a strapping belt, enabling the strapping belt to be closely attached to an article to be strapped so as to enhance the strapping effect.

In order to achieve the aforesaid objective, the tightening auxiliary device for a strapping belt of the present invention is mounted to a strapping machine. The strapping machine is used to strap an article with a strapping belt and a strapping buckle. The strapping machine is provided with a rotary shaft for tightening the strapping belt. The tightening auxiliary device comprises a main body. Two ends of a long axis of the main body have a fixed portion and a stop portion respectively extending downward from the bottom of the main body. The fixed portion is fixedly connected to the strapping machine. The stop portion is formed with a stop recess. A space is formed between the fixed portion and the stop portion.

The strapping buckle is disposed at the stop portion of the main body. When the strapping belt is tightened by the strapping machine, the stop portion holds against the strapping belt and a first side of the strapping buckle and a second side of the strapping buckle is not pressed, so that the strapping machine can pull and tighten the strapping belt effectively. The strapping belt is closely attached to an article to be strapped to enhance the strapping effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a conventional strapping machine;

FIG. 2 is a perspective view in accordance with a first embodiment of the present invention;

FIG. 3 is a side view in accordance with the first embodiment of the present invention;

FIG. 4 is a first schematic view in accordance with the first embodiment of the present invention when it is used to strap a box;

FIG. 5 is a second schematic view in accordance with the first embodiment of the present invention when it is used to strap a box;

FIG. 6 is a third schematic view in accordance with the first embodiment of the present invention when it is used to strap a box;

FIG. 7 is a schematic view in accordance with the first embodiment of the present invention when it is used to strap a circular pipe;

FIG. 8 is a schematic view in accordance with a second embodiment of the present invention when in use;

FIG. 9 is a partial schematic view in accordance with a third embodiment of the present invention when in use;

FIG. 10 is a partial schematic view in accordance with a fourth embodiment of the present invention when in use;

FIG. 11 is a partial schematic view in accordance with a fifth embodiment of the present invention when in use; and

FIG. 12 is a partial schematic view in accordance with a sixth embodiment of the present invention when in use.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

Referring to FIG. 2 and FIG. 3, the present invention discloses a tightening auxiliary device for a strapping belt. As shown in FIG. 4, the tightening auxiliary device is mounted to a strapping machine 200. The strapping machine 200 is used to strap an article 500 with a strapping belt 300 and a strapping buckle 400. The strapping machine 200 is provided with a rotary shaft 20 for tightening the strapping belt 300. The tightening auxiliary device comprises a main body 10.

The main body 10 is substantially in the shape of an elongate board. Two ends of the long axis of the main body 10 have a fixed portion 11 and a stop portion 12 respectively extending downward from the bottom of the main body 10, and a space 13 is formed between the fixed portion 11 and the stop portion 12. The fixed portion 11 is fixedly connected to the strapping machine 200. An outer side of the stop portion 12 is formed with a stop recess 121. The stop portion 12 is formed with a first limit block 122 and a second limit block 123 at two sides of the stop recess 121. In a first embodiment of the present invention, the stop recess 121 is an oblique recess. The stop recess 121 is formed with a slope 124. An angle is defined between the slope 124 and the short axis of the main body 10.

The strapping buckle 400 is disposed at the stop portion 12 of the main body 10, which is formed by bending two ends of an iron wire toward the center of the iron wire. The strapping buckle 400 has a rectangular hollow portion 401. The strapping buckle 400 has a first side 402 and a second side 403 disposed opposite to each other. The first side 402 has a first retaining section 404 and a second retaining section 405.

Referring to FIG. 5 in conjunction with FIG. 2 to FIG. 4, in this embodiment, the strapping machine 200 is a pneumatic strapping machine, and the article 500 is a box. When the user wants to strap the article 500 by using the strapping machine 200, the strapping belt 300 is wound around the article 500, and the first end of the strapping belt 300 is wound and fixed at the first side 402 of the strapping buckle 400, and the second end of the strapping belt 300 is wound around the second side 403 and extends out of the strapping buckle 400 and then is fitted on the rotatory shaft 201. After that, the user holds the strapping machine 200 with his/her hands and the stop portion 12 holds against the strapping buckle 400, so that the first side 402 is positioned in the stop recess 121. The strapping machine 200 is actuated to rotate the rotary shaft 201 to pull and tighten the strapping belt 300 from the second side 403 of the strapping buckle 400. At this moment, the slope 124 of the main body 10 is to hold against the first end of the strapping belt 300 and the second retaining section 405 of the strapping buckle 400, and the second side 403 of the strapping buckle 400 is located in the space 13. Thus, through the rotary shaft 201, the second end of the strapping belt 300 can be pulled smoothly. As shown in FIG. 6, after the strapping belt 300 is tightened, the strapping machine 200 descends due to the counterforce of the strapping belt 300 to close the strapping buckle 400. At the moment, the second limit block 123 of the main body 10 holds against the second retaining section 405 of the strapping buckle 400 to complete the tightening operation. Finally, the excessive portion of the strapping belt 300 is cut off. Thereby, the present invention avoids the drawback that the second side 403 of the conventional strapping buckle 400 is jammed. The strapping machine 200 can pull and tighten the strapping belt 300 effectively, so that the strapping belt 300 is closely attached to the article 500 to enhance the strapping effect.

It should be noted that at the beginning of the tightening operation, the first limit block 122 and the stop recess 121 restrain and hold against the first retaining section 404 of the strapping buckle 400. In the tightening operation, the slope 124 guides the first retaining section 404 to move toward the second retaining section 405 to be buckled. When the tightening operation is completed, the second limit block 123 and the stop recess 121 retrain and hold against the second retaining section 405 of the strapping buckle 400. During the tightening operation, the stop portion 12 holds against the strapping buckle 400 to improve the fluency and safety of the tightening work.

Referring to FIG. 7, the strapping machine can be used to strap a cylindrical article 600 which may be a plurality of tubular bodies, such that the strapping belt 300 is closely attached to the cylindrical article 600 to enhance the strapping effect of the strapping machine 200.

FIG. 8 is a schematic view of a second embodiment of the present invention when in use. The second embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The strapping machine 200 is a manual-operated one. The fixed portion 11 of the main body 10 may be of various shapes, such as an arc, to be applied to various strapping machines 200.

FIG. 9 is a schematic view of a third embodiment of the present invention when in use. The third embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The first limit block 122 of the third embodiment is greater than the second limit block 123.

FIG. 10 is a partial view of a fourth embodiment of the present invention when in use. The fourth embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The main body 10 is provided with a first hook block 125 at the slope 124. The first hook block 125 is located at the distal end of the second limit block 123. The second retaining section 405 of the strapping buckle 400 is restrained at the first hook block 125 of the stop recess 121 when the tightening operation is completed. During the tightening operation, the stop portion 12 holds against the strapping buckle 400 to improve the fluency and safety of the tightening work.

FIG. 11 is a partial view of a fifth embodiment of the present invention when in use. The fifth embodiment is substantially similar to the fourth embodiment with the exceptions described hereinafter. The main body 10 is formed with a first arc recess 126A and a second arc recess 126B at the slope 124. At the beginning of the tightening operation, the first limit block 122 and the first arc recess 126A restrain and hold against the first retaining section 404 of the strapping buckle 400. When the tightening operation is completed, the second limit block 123 and the second arc recess 126B retrain and hold against the second retaining section 405 of the strapping buckle 400. During the tightening operation, the stop portion 12 holds against the strapping buckle 400 to improve the fluency and safety of the tightening work.

FIG. 12 is a partial view of a sixth embodiment of the present invention when in use. The sixth embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The stop recess 121 has a flat surface 127. The flat surface 127 is formed with a notch 128 adjacent to the first limit block 122. The main body 10 is further provided with a second hook block 129 protruding from the flat surface 127. The second hook block 129 is located at the distal end of the second limit block 123. At the beginning of the tightening operation, the first limit block 122 and the notch 128 restrain and hold against the first retaining section 404 of the strapping buckle 400. When the tightening operation is completed, the second limit block 123 and the flat surface 127 hold against the second retaining section 405 of the strapping buckle 400. Through the second hook block 129, the second retaining section 405 is restrained in the stop recess 121. During the tightening operation, the stop portion 12 holds against the strapping buckle 400 to improve the fluency and safety of the tightening work.

Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims. 

What is claimed is:
 1. A tightening auxiliary device for a strapping belt, comprising a main body, the main body being mounted to a strapping machine, the strapping machine being used to strap an article with a strapping belt and a strapping buckle, the strapping machine being provided with a rotary shaft for tightening the strapping belt, and characterized by: two ends of a long axis of the main body having a fixed portion and a stop portion respectively extending downward from a bottom of the main body, the fixed portion being fixedly connected to the strapping machine, the stop portion being formed with a stop recess, a space being formed between the fixed portion and the stop portion; wherein when the strapping belt is tightened by the strapping machine, the stop portion holds against the strapping belt and a first side of the strapping buckle and a second side of the strapping buckle is not pressed so that the strapping machine can pull and tighten the strapping belt effectively.
 2. The tightening auxiliary device for a strapping belt as claimed in claim 1, wherein the stop portion is formed with a first limit block and a second limit block at two sides of the stop recess.
 3. The tightening auxiliary device for a strapping belt as claimed in claim 2, wherein the stop recess is an oblique recess, and the stop recess is formed with a slope.
 4. The tightening auxiliary device for a strapping belt as claimed in claim 3, wherein the main body is provided with a first hook block at the slope, and the first hook block is located at a distal end of the second limit block.
 5. The tightening auxiliary device for a strapping belt as claimed in claim 4, wherein the main body is formed with a first arc recess and a second arc recess at the slope.
 6. The tightening auxiliary device for a strapping belt as claimed in claim 2, wherein the stop recess has a flat surface, the flat surface is formed with a notch adjacent to the first limit block, the main body is further provided with a second hook block protruding from the flat surface, and the second hook block is located at a distal end of the second limit block. 